terrible-terribly; true-truly; gentle-gently

形容词变副词通常是加ly,其变化有规律可循,请记住以下口诀：

一般直接加，“元e”去e加，“辅y”改i加，“le”结尾e改y。

分别举例如下：

quick-quickly; true-truly; happy-happily; pssible-possibly

具体规则如下：

1.一般情况下直接加“ly”，如：

quick-quickly; polite-politely; sad-sadly; imediate-immediately; recent-recently

2. 少数以e结尾的形容词，要去掉e再加-ly。如：true-truly; due-duly

绝大多数辅音字母加e结尾的形容词直接加-ly。如：

polite-politely; wide-widely; wise-wisely;nice-nicely

3. 以“y”结尾的，且读音为 / i /， 先将“y”改成“i”，再加“ly”，如：

happy-happily; heavy-heavily; angry-angrily; busy-busily

但是如果读音为 / ai /， 直接加ly，如：dry-dryly; sly-slyly; shy---shyly

4.以ic 结尾的词，加ally，如：

economic-economically; basic-basically; scientific-scientifically; automatic-automatically; energetic-energetically; 但是public-publicly 例外。


5.以辅音字母加le结尾时,去e加y，如：

simple-simply; considerable-considerably; terrible-terribly

gentle-gently; possible-possibly; probable-probably; incredible-incredibly

元音字母加le时加 ly，如：sole-solely。但是whole-wholly例外。


6. 以-ll结尾时，只须加 –y，如：dull-dully; shrill-shrilly

需注意:  有些以ly结尾的词是形容词而非副词。如：

friendly people; motherly care; lovely dog; monthly exam; heavenly peace; a manly sport